genitive case
Quick Summary
The genitive case is a grammatical case that typically indicates possession or origin. In English, it's often shown with an apostrophe followed by an 's' (e.g., "Harry's mustache") or by using the preposition "of" (e.g., "that mustache of Harry's"). This construction, sometimes called a double possessive or double genitive, has been used in English for centuries.12
In some languages, like classical Arabic, the genitive case is marked by specific endings on nouns and adjectives, functioning similarly to English prepositions. For instance, the Arabic word for "dog" (kalb) changes its ending to kalb-in when indicating possession or origin, translating to "(of) a dog". This case system helps clarify the function of words within a sentence.34
Ask Britannica AI about this topic
Britannica doesn't have a full article on this topic, so we've curated a list of our relevant coverage.


